Base Converter — Binary, Octal, Decimal, Hex & Custom
Paste or type a number to convert between bases 2–36. Exact big-int math for integers, fractional support with precision, and a powerful bulk mode.
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What you can do
- Convert between bases 2–36 (binary, octal, decimal, hex, etc.)
- Auto-detect base from prefix or digits
- Format outputs with 0b/0o/0x, uppercase, and digit grouping
- Handle fractional inputs with configurable precision
- Bulk-convert many numbers and export CSV
- View signed value for a given two’s-complement bit width
Frequently Asked Questions (FAQs)
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